Armchair



FIG. 1 is a perspective view of the armchair showing my new design;

FIG. 2 is a top plan view;

FIG. 3 is a bottom plan view;

FIG. 4 is a side elevation view, the opposite side view being a mirrorimage thereof;

FIG. 5 is a front elevation view, and,

FIG. 6 is a rear elevation view thereof.

The ornamental design for an armchair, as shown and described.